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    1.
    发明专利
    未知

    公开(公告)号：DE69228904T2

    公开(公告)日：1999-11-25

    申请号：DE69228904

    申请日：1992-06-16

    Applicant: IBM

    Inventor： BROWN PAUL JOSEPH ,  FREDERICKS KENNETH JAMES ,  HEFFERON EUGENE PAUL ,  MERITT ALLAN SAMUEL ,  MOFFITT GERALD THOMAS

    IPC: G06F13/14 ,  G06F13/00 ,  H04L29/00 ,  G06F15/16

    Abstract: A method for acquiring the node identifier of a node in a data processing input/output (I/O) system having a plurality of nodes. This procedure is part of the initialization of each node in the I/O system and may be used to establish the configuration of the I/O system such that if a connection breaks or a fault occurs between nodes, the configuration can be confirmed after the break or fault is corrected. This prevents data from being sent to the wrong device if lines were connected in a different configuration during the correction of a fault. The node identifier is a worldwide-unique identifier such that only one node is identified by a node identifier. The node identifier contains a validity code that specifies if the node identifier is valid. Also disclosed is a retry procedure for retrying the acquisition of a node identifier if the acquired node identifier is not valid, and a deferral procedure which defers the retry procedure if a link is not available.

    2.
    发明专利
    未知

    公开(公告)号：DE69228904D1

    公开(公告)日：1999-05-20

    申请号：DE69228904

    申请日：1992-06-16

    Applicant: IBM

    Inventor： BROWN PAUL JOSEPH ,  FREDERICKS KENNETH JAMES ,  HEFFERON EUGENE PAUL ,  MERITT ALLAN SAMUEL ,  MOFFITT GERALD THOMAS

    IPC: G06F13/14 ,  G06F13/00 ,  H04L29/00 ,  G06F15/16

    Abstract: A method for acquiring the node identifier of a node in a data processing input/output (I/O) system having a plurality of nodes. This procedure is part of the initialization of each node in the I/O system and may be used to establish the configuration of the I/O system such that if a connection breaks or a fault occurs between nodes, the configuration can be confirmed after the break or fault is corrected. This prevents data from being sent to the wrong device if lines were connected in a different configuration during the correction of a fault. The node identifier is a worldwide-unique identifier such that only one node is identified by a node identifier. The node identifier contains a validity code that specifies if the node identifier is valid. Also disclosed is a retry procedure for retrying the acquisition of a node identifier if the acquired node identifier is not valid, and a deferral procedure which defers the retry procedure if a link is not available.

    4.
    发明专利
    未知

    公开(公告)号：DE69331449T2

    公开(公告)日：2002-09-26

    申请号：DE69331449

    申请日：1993-02-12

    Applicant: IBM

    Inventor： BARTOW NIEL GEORGE ,  BROWN PAUL JOSEPH ,  CAPOWSKI ROBERT STANLEY ,  FASANO LOUIS THOMAS ,  CREGG THOMAS ANTHONY ,  SALYER GREGORY ,  WESTCOTT DOUGLAS WAYNE

    IPC: G06F13/12 ,  G06F13/00 ,  G06F13/38 ,  H04L69/40

    Abstract: Buffers 54,58 are provided in two elements 52,56 between which data is to be transferred wherein both buffers are managed solely by the originator of the data transfer. Only one transfer is required to transmit a message, and a second transfer acknowledges the completion of the function because message delivery to the receiver is guaranteed under the implemented protocol. When a request is sent, a message timer is started at the sender. When the normal response for the request is received, the timer is reset; however, if the duration of the message operation exceeds the timeout value, a message-timeout procedure is initiated. When the cancel command is issued, a second timer is set. If this timer is exceeded, subsequent cancel commands can be issued. If subsequent cancel commands are issued, a cancel complete command must be sent and responded to. Since the commands must be executed in the sequence in which they are received, a response to the cancel complete command ensures that there are no other cancel operation commands remaining in the receiver, allowing subsequent operations to start without danger of being cancelled.

    5.
    发明专利
    未知

    公开(公告)号：AT212136T

    公开(公告)日：2002-02-15

    申请号：AT93301037

    申请日：1993-02-12

    Applicant: IBM

    Inventor： BARTOW NIEL GEORGE ,  BROWN PAUL JOSEPH ,  CAPOWSKI ROBERT STANLEY ,  FASANO LOUIS THOMAS ,  CREGG THOMAS ANTHONY ,  SALYER GREGORY ,  WESTCOTT DOUGLAS WAYNE

    IPC: G06F13/00 ,  G06F13/12 ,  G06F13/38 ,  H04L69/40

    Abstract: Buffers 54,58 are provided in two elements 52,56 between which data is to be transferred wherein both buffers are managed solely by the originator of the data transfer. Only one transfer is required to transmit a message, and a second transfer acknowledges the completion of the function because message delivery to the receiver is guaranteed under the implemented protocol. When a request is sent, a message timer is started at the sender. When the normal response for the request is received, the timer is reset; however, if the duration of the message operation exceeds the timeout value, a message-timeout procedure is initiated. When the cancel command is issued, a second timer is set. If this timer is exceeded, subsequent cancel commands can be issued. If subsequent cancel commands are issued, a cancel complete command must be sent and responded to. Since the commands must be executed in the sequence in which they are received, a response to the cancel complete command ensures that there are no other cancel operation commands remaining in the receiver, allowing subsequent operations to start without danger of being cancelled.

    7.
    发明专利
    未知

    公开(公告)号：MX9204928A

    公开(公告)日：1993-03-01

    申请号：MX9204928

    申请日：1992-08-26

    Applicant: IBM

    Inventor： BROWN PAUL JOSEPH ,  FREDERICKS KENNETH JAMES ,  HEFFERON EUGENE PAUL ,  MOFFIT GERALD THOMAS ,  MERITT ALLAN SAMUEL

    IPC: G06F13/00 ,  G06F13/14 ,  H04L29/00 ,  G06C7/00

    Abstract: A method for acquiring the node identifier of a node in a data processing input/output (I/O) system having a plurality of nodes. This procedure is part of the initialization of each node in the I/O system and may be used to establish the configuration of the I/O system such that if a connection breaks or a fault occurs between nodes, the configuration can be confirmed after the break or fault is corrected. This prevents data from being sent to the wrong device if lines were connected in a different configuration during the correction of a fault. The node identifier is a worldwide-unique identifier such that only one node is identified by a node identifier. The node identifier contains a validity code that specifies if the node identifier is valid. Also disclosed is a retry procedure for retrying the acquisition of a node identifier if the acquired node identifier is not valid, and a deferral procedure which defers the retry procedure if a link is not available.

    9.
    发明专利
    未知

    公开(公告)号：DE69326573T2

    公开(公告)日：2000-04-27

    申请号：DE69326573

    申请日：1993-01-21

    Applicant: IBM

    Inventor： BARTOW NEIL GEORGE ,  BROWN PAUL JOSEPH ,  CAPOWSKI ROBERT STANLEY ,  FASANO LOUIS THOMAS ,  GREGG THOMAS ANTHONY ,  SALYER GREGORY ,  SUGRUE PATRICK JOHN ,  WESTCOTT DOUGLAS WAYNE ,  ZEYAK VINCENT PAUL

    IPC: H04J3/06 ,  H04L25/02 ,  H04L69/40 ,  H04B1/76 ,  H04L1/16

    Abstract: A system and method for asynchronously transmitting data blocks, in parallel, across multiple fibers in a serial manner. Frame groups are provided as a mechanism to transmit associated data serially on each fiber and tie the data being transmitted together. The frame groups do not have sequence numbers, therefore, the receiver determines which frames are part of a frame group by the arrival times of the individual frames. In one embodiment, the transceivers for each member of the parallel bus asynchronously achieve synchronism at each end of the fiber. Thus the need for a common clock is eliminated. The receivers on each side of the bus determine the relative skew for each conductor by performing skew measurements on a calibration message generated by the transmitters on the other side of the bus. When the skew on all conductors, viewed from both sides of the bus, has been determined, the skew values are exchanged across the bus, thus enabling the transmitters to set proper frame spacing.

    10.
    发明专利
    未知

    公开(公告)号：DE69326573D1

    公开(公告)日：1999-11-04

    申请号：DE69326573

    申请日：1993-01-21

    Applicant: IBM

    Inventor： BARTOW NEIL GEORGE ,  BROWN PAUL JOSEPH ,  CAPOWSKI ROBERT STANLEY ,  FASANO LOUIS THOMAS ,  GREGG THOMAS ANTHONY ,  SALYER GREGORY ,  SUGRUE PATRICK JOHN ,  WESTCOTT DOUGLAS WAYNE ,  ZEYAK VINCENT PAUL

    IPC: H04J3/06 ,  H04L25/02 ,  H04L69/40 ,  H04B1/76 ,  H04L1/16

    Abstract: A system and method for asynchronously transmitting data blocks, in parallel, across multiple fibers in a serial manner. Frame groups are provided as a mechanism to transmit associated data serially on each fiber and tie the data being transmitted together. The frame groups do not have sequence numbers, therefore, the receiver determines which frames are part of a frame group by the arrival times of the individual frames. In one embodiment, the transceivers for each member of the parallel bus asynchronously achieve synchronism at each end of the fiber. Thus the need for a common clock is eliminated. The receivers on each side of the bus determine the relative skew for each conductor by performing skew measurements on a calibration message generated by the transmitters on the other side of the bus. When the skew on all conductors, viewed from both sides of the bus, has been determined, the skew values are exchanged across the bus, thus enabling the transmitters to set proper frame spacing.

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